iPhone 的默认键盘动画速率是多少? [英] What is the iPhone's default keyboard animation rate?

问题描述

不久前，我记得看到某种常数定义了 iPhone 上键盘的动画速率，但我终生无法记住我在哪里看到它......有什么见解吗?

A while ago I remember seeing a constant of some kind that defined the animation rate of the Keyboard on the iPhone and I can not for the life of me remember where I saw it....any insight?

推荐答案

- (NSTimeInterval)keyboardAnimationDurationForNotification:(NSNotification*)notification
{
    NSDictionary* info = [notification userInfo];
    NSValue* value = [info objectForKey:UIKeyboardAnimationDurationUserInfoKey];
    NSTimeInterval duration = 0;
    [value getValue:&duration];
    return duration;
}

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